PLATE XLVI. 



Pachydiscus Otacodensis (page 340). 



Figure 1. Side view of the specimen from Hornby Island, presented 

 by Mr. Robbins. 



CuspiDARiA SuciENSis (page 376). 



Figure 2. The right valve of this species from the Sucia Islands, as 

 described in the text, but twice the natural size. 



Tellina nanaimoensis (page 376). 



Figure 3. Side view of the type of this species, from the Nanaimo 

 River, V. I., and shewing the right valve. 



NucuLA HoRNBYENSis (page 388). 



Figure 4. Side view of an apparently adult shell of this species, from 

 Hornby Island, and twice the natural size. 



